9) So basically we have what they all add up to and we have 2 of the sides out of 3 so what we can do is take the perimeter and minus the two sides we do know to get the one we dont know.
Set up:
10x+5y - (3x+4y) - (5x-y)
Remove parenthesees
10x+5y-3x-4y-5x+y
Simplify
2x+2y (ANSWER TO 9)
10) This one is giving us a triangle and we know all 3 sides. Its asking for that the perimeter is which is all of the sides added so we should add them.
Set up:
(3a+4) + (2a-7) + (5a^2 + a)
Group them together so we dont make mistakes
5a^2 + 3a+2a+a + 4-7
Simplify
5a^2 + 6a - 3 (ANSWER TO 10)
<u><em>Let me know if you need any more help !</em></u>
